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vfs: make removexattr retry once on ESTALE 

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Jeff Layton 2012-12-11 12:10:17 -05:00 committed by Al Viro
parent bd9bbc9842
commit 12f0621299
1 changed files with 7 additions and 2 deletions
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9
fs/xattr.c
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@ -645,8 +645,9 @@ SYSCALL_DEFINE2(removexattr, const char __user *, pathname,
{
struct path path;
int error;
error = user_path(pathname, &path);
unsigned int lookup_flags = LOOKUP_FOLLOW;
retry:
error = user_path_at(AT_FDCWD, pathname, lookup_flags, &path);
if (error)
return error;
error = mnt_want_write(path.mnt);
@ -655,6 +656,10 @@ SYSCALL_DEFINE2(removexattr, const char __user *, pathname,
mnt_drop_write(path.mnt);
}
path_put(&path);
if (retry_estale(error, lookup_flags)) {
lookup_flags |= LOOKUP_REVAL;
goto retry;
}
return error;
}